Peng-Bo Li

May 6, 2024 | link.aps.org | Xue-Feng Pan |Quantum Optoelectronic Devices |Xi’an Jiaotong |Peng-Bo Li

Coherent and dissipative interactions between different quantum systems are essential for the construction of hybrid quantum systems and the investigation of novel quantum phenomena. Here, we propose and analyze a magnon-skyrmion hybrid quantum system, consisting of a micromagnet and nearby magnetic skyrmions. We predict a strong-coupling mechanism between the magnonic mode of the micromagnet and the quantized helicity degree of freedom of the skyrmion.

Nov 13, 2023 | link.aps.org | Yi-Xuan Ma |Quantum Optoelectronic Devices |Xi'an Jiaotong |Peng-Bo Li

We propose an efficient method to generate single-phonon Fock states by exploiting a previously unidentified phonon blockade mechanism in a hybrid spin-mechanical system. Specifically, this mechanism makes use of arbitrarily weak Duffing nonlinearity to modify matrix elements of an effective phonon excitation process, assisted by both one- and two-phonon drives.

Jul 14, 2023 | link.aps.org | Xing-Liang Dong |Quantum Optoelectronic Devices |Xi'an Jiaotong |Peng-Bo Li

Abstract We investigate quantum emitters (QEs) interacting with a photonic structured bath made of bilayer square lattices, where the resonance anticrossing between the energy bands opens a symmetric middle energy gap. Due to the intrinsic chiral symmetry of the bath and interactions with the squarelike band edges, the QE-photon dressed states generated in this inner band gap are odd neighbor, robust, and anisotropic, when the emitters' transition frequencies lie in the middle of the band gap.

Feb 15, 2023 | link.aps.org | Quantum Optoelectronic Devices |Xi’an Jiaotong |Xin-Lei Hei |Peng-Bo Li

Abstract Coherent tripartite interactions among degrees of freedom of completely different nature are instrumental for quantum information and simulation technologies, but they are generally difficult to realize and remain largely unexplored. Here, we predict a tripartite coupling mechanism in a hybrid setup comprising a single nitrogen-vacancy (NV) center and a micromagnet.